Container



Dec. 12, 1944. BRANDT 2,364,943

CONTAINER Filed March 13, 1945 2 Sheets-Sheet l Dec. 12, 1944. BRANDT 2,364,943

CONTAINER Filed March 13, 1943 2 Sheets-Sheet 2 fbxffajwg Patented Dec. 12, 1944 CONTAINER Francis L. Brandt, Lynn, Mass, assignor to. National Fireworks, Inc., a corporation of Massachusetts Application March 13, 1943, Serial No. 479,015 3 Claims. (01. 229-14) My invention relates to containers and more particularly, to powder box liners or bags and the method of making the same.

One of the principal objects of my invention is to provide-a liner constructed of waterproof pliable material for protecting powder contained within a powder box and which liner is so fabricated and arranged that the wall structure of the liner is maintained in a condition precluding overstrain when disposed within the powder box and urged into and maintained in contactual relation with the box by powder introduced into and contained in the liner or by shock imparted to the box when the liner is in a filled condition.

Another object of my invention resides in the method of fabricating a liner of the above described character from a single sheet or piece of material.

A further object of this invention is to provide a liner of the foregoing described character so constructed and arranged whereby the same may be compactly folded for transit and/or storage and at the same time be maintained in condition for immediate insertion within a powder box.

A still further object of this invention is topro- ,vide a liner of the foregoing described character equipped with suitable fastening means whereby one end of the liner may be sealed before being inserted into a powder box and in a manner that powder introduced into the liner will automatically serve as the causation whereby the liner will tend to conform to the contour of the powder box.

An important object of this invention is to provide a liner of the foregoing described character which is simple in construction, durable in use, efficient in operation, economical in manufacture and which lends itself to high productivity.

With the above and other objects in view, as will hereinafter appear, the invention consists in the combination and arrangement of parts hereinafter set forth and illustrated in the accompanying drawings from which the several features of the invention and the advantages attained thereby will be readily understood by those skilled in the art.

Referring to the drawings wherein like reference characters designate like part throughout the several views:

Figure 1 is a perspective view of a filled powder box liner or bag constructed in accordance with my invention and with the powder box removed.

Figure 2 is a fragmentary side elevation of the liner and illustrating a fastening means therefore.

Figure 3 is a fragmentary transverse sectional view of the liner and powder box.

Figure 4 is a diagrammatical side elevation of mechanism for fabricating the liner.

Figure 5 is a diagrammatical prospective view 7 end of the liner and illustrates of a sheet of the material after the same has been subjected to the folding operation.

. ,Figure 6 is a diagrammatically transverse sectional view of the liner and illustrates the method of folding the material and securing the margins together previous to the same being introduced into a powder box.

. Figure 7 is a side elevation, partly in section, of the liner'and illustrating the means of closing one end of the same.

Figure 8 is a longitudinal sectional view of a powder box with a liner inserted therein and previous to powder being introduced into the liner.

Figure 9 is a view similar to Figure 8 but illustrating the powder being introduced into the liner and the latter being. shaped in conformity with the powder box.

Figure 10 is a view similar to Figure 9 but illustrating the liner filled with powder and the powder box closed.

Figure 11 is a fragmentary side elevation of one a modified form of sealing means.

Figure 12 is a side elevation of another modification.

As illustrated in Figures 1 to 10 inclusive of the drawings, the liner 5 is constructed of a single piece of waterproof pliable material, for instance, two sheets of No. 1 sulphate kraft paper joined by asphaltum, and which is formed with a plurality of parallel folds arranged in alternate folded relation to provide accordion folds 6. The margins or free edges I, paralleling the folds B, and the centrally disposed fold 8, are of an appreciable greater width than the adjacent folds 6, whereby the margins i are secured together in overlapping relation and sealed, one with the other, with a suitable adhesive or cement to form a continuous jointure 9 throughout the length of the margins, thus forming a hollow body I 0 open at its top and bottomends I2 and I3 respec tively.

When the body I0 is thus formed, the margins 'l and the fold 8 constitute bridge section l4 and serve to group the accordion folds 6 into a confronting pair, as clearly illustrated in Figure 6,

thus permitting the body to assume a compact relatively narrow and thin elongated configuration when the bridge sections I4 are pressed and held towards each other, thereby facilitating insertion of the body within a powder box and conserving space in storing or transporting of the same. When the body is thus compressed, the bottom end I3 is folded upon itself as at l5 and has secured therethrough a pair of rivets I6, the latter being constructed of metal or plastic as desired. When the bottom end I3 is thus sealed,

the liner is inserted into the powder box I1 and with the, open top end !2 extending outwardly through the opening l8 in the upper head IQ of the powder box. The top end I2 is then ma-' nipulated to form a funnel 2,0 whereby powder H is introduced into the liner. As the powder 2| is introduced into the'liner, it gradually fills the liner and causes the circumferential wall and bottom end of said liner to be ballooned or disposed into appressed relation with the peripheral wall 22 and lower head 23 of the powder box thus, automatically shaping the liner to conform to the general contour of the powder box.

When the liner is filled with powder, the upper end I2, is closed and a suitable fastener, for instance, a clip 24 is applied thereto to seal said upper end. When the clip. is applied to said upper end, the latter is tucked into the powder box under the upper head IS, the opening II in said head being closed by a suitable closure 25. The liner is constructed in a manner to relieve the side and end walls of overstrain occasioned by the introduction of powder therein or shock imparted to the box and is accomplished by forming the liner of a greater length and diameter than the inside length of the box, between its heads, and the diameter of said box. Whenthe liner is thus formed, the-side andend walls of the liner will be pressed into engagement with the walls of the box by the powder and, due to the variation in diameter and length, develop a crimped condition in the walls of the liner as shown in Figure 3 and, thus preclude any overstrain.

One method of forming the bag consists of supplying the aforementioned material in the form of a roll 30 and feeding said material from the roll to between a pair of crimping or similar rollers 31-, to formthe folds 6 and 8. The ma.- terial, after thus being formed, is cut into desired lengths by means of a cutting device 32 thus providing a sheet having the relatively wide margins I which are secured together as heretofore described. When the margins are secured together, the bridgesections H- are compressed towards each other and one end of the body is sealed whereupon the body or liner thus formed, is ready for insertion into the powder box 11;

In the modified form illustrated in Figure 11,

one end W of the liner, while in compressed condition and intermediate the margins of the bridge sections is folded in a longitudinal manner to compress the end 40 and a strip of adhesive tape I applied about the folded portionto seal the end.

As illustrated in Figure 12, the ends of the liner may be closed by means of strings '50 or other similar fasteners and, in instances where the liner is to be utilized as a container per se, the ends may be maintained in extended condition and thus provide handles whereby to facilitate handling of said container.

It is to be distinctly understood that previous to sealing the lower ends of the bag, either by means of the rivets tape or strings, the ends may be treated with a suitable adhesive for coacting with said rivets or tape to effectively seal the end.

It is also to be understood that the language used herein and in the claims is intended to cover all the generic and specific features of the invention herein described, and all statements of the scope of the invention which, as a matter of language, may be said to fall therebetween. Furthermore, the terms top, bottom, upper and lower" are used in a relative sense for the purpose of description and not by way of limitait being understood, in some instances, that the various parts of the invention may be arranged in a manner whereby the foregoing terms would not appropriately describe their relative positions.

. Without further elaboration the foregoing will So fully explain the invention that others may, by applying current knowledge, readily adapt the same for use under various conditions of servi Moreover, it is not indispensable that all the fe tures of the invention be used conjointly sin e they may be employed advantageously in various combinations and subcombinations.

It is obvious that the invention is not confined to the herein described use therefore as it may be utilized for any purpose to which it is adaptable. It is therefore to be understood that the invention is not limited to the specific construction as illustrated and described as the same is only illustrative of the principles of operation, which are capable of extended application in various forms, and that the invention comprehends all construction within the scope of the appended claims.

Having thus described my invention, what I claim is:

1. Acontainer comprising a hollow case having a plurality of rigid sides and an opening in one of said sides smaller in area than that of said one side, and a liner adapted to be inserted through said opening, said liner being of folded pliable sheet material accordion pleated along full lines extending substantially the full length of the liner in the direction of the insertion and expanded within said case to cover the inner surface thereof, said liner being greater in all crossseotional dimensions when expanded than the greatest cross-sectional dimension when folded.

2 A container comprising a hollow case having a plurality of rigid sides and an opening in one of said sides smaller in area than that of said one side, and an expansible liner adapted to be insorted through said opening, said liner being of folded pliable sheet material accordion pleated along full lines extending substantially the full 4 length of the liner in the direction of the insertion within said case, said liner being contractible laterally to a cross-sectional area smaller than aforesaid area and expansible uniformly radially from said cross-sectional area to spatial dimensions substantially equal to the volume of said case, said liner acquiring a radially extended flattened bottom, when expanded.

3. A container comprising a hollow case having a plurality of rigid; sides and an opening in one of said sides smaller in area than that of said one side, a liner adapted to be inserted through said opening, said liner being of fluid-resistant folded pliable sheet material accordion pleated along full lines extending substantially t full length of the liner in the direction of the i ettion and expanded within said case to cove the inner surface thereof, said liner being contractibie laterally to a cross-sectional area smaller than aforesaid area and expansible uniformly radially from said cross-sectional area to spatial dimensions substantially equal to the volume of said case, said liner being formed of a pleated strip having flat side edge portions secured together and a flat portion intermediate the side edge portions adapted to lie opposite said portions when said liner is folded, and said liner bechamber formed by said expanded liner.

FRANCIS L. BRANDT. 

